<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>WebGL Book Page Flip Effect</title>
    <style>
        body, html { margin: 0; height: 100%; display: flex; justify-content: center; align-items: center; }
        canvas { width: 100%; height: 100%; display: block; }
    </style>
</head>
<body>
    <canvas id="glCanvas"></canvas>
    <script type="text/javascript" src="script.js"></script>
</body>
</html>